mgcp/rtp: Add RTP header patch mode configuration
This adds datastructures and a VTY frontend to configure the
different type of RTP header patching: SSRC and timestamp.
Note that timestamp patching is not yet implemented.
Sponsored-by: On-Waves ehf
diff --git a/openbsc/src/libmgcp/mgcp_protocol.c b/openbsc/src/libmgcp/mgcp_protocol.c
index a0b905d..c703bec 100644
--- a/openbsc/src/libmgcp/mgcp_protocol.c
+++ b/openbsc/src/libmgcp/mgcp_protocol.c
@@ -614,6 +614,21 @@
return found_media;
}
+void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change,
+ struct mgcp_rtp_end *rtp)
+{
+ struct mgcp_trunk_config *tcfg = endp->tcfg;
+
+ rtp->force_constant_timing = tcfg->force_constant_timing;
+ rtp->force_constant_ssrc = tcfg->force_constant_ssrc;
+
+ LOGP(DMGCP, LOGL_DEBUG,
+ "Configuring RTP endpoint: local port %d%s%s\n",
+ ntohs(rtp->rtp_port),
+ rtp->force_constant_timing ? ", force constant timing" : "",
+ rtp->force_constant_ssrc ? ", force constant ssrc" : "");
+}
+
static struct msgb *handle_create_con(struct mgcp_parse_data *p)
{
struct mgcp_trunk_config *tcfg;
@@ -688,6 +703,8 @@
/* initialize */
endp->net_end.rtp_port = endp->net_end.rtcp_port = endp->bts_end.rtp_port = endp->bts_end.rtcp_port = 0;
+ mgcp_rtp_end_config(endp, 0, &endp->net_end);
+ mgcp_rtp_end_config(endp, 0, &endp->bts_end);
/* set to zero until we get the info */
memset(&endp->net_end.addr, 0, sizeof(endp->net_end.addr));
@@ -825,6 +842,9 @@
}
}
+ mgcp_rtp_end_config(endp, 1, &endp->net_end);
+ mgcp_rtp_end_config(endp, 1, &endp->bts_end);
+
/* modify */
LOGP(DMGCP, LOGL_DEBUG, "Modified endpoint on: 0x%x Server: %s:%u\n",
ENDPOINT_NUMBER(endp), inet_ntoa(endp->net_end.addr), ntohs(endp->net_end.rtp_port));
@@ -1121,7 +1141,6 @@
memset(&endp->bts_state, 0, sizeof(endp->bts_state));
endp->conn_mode = endp->orig_mode = MGCP_CONN_NONE;
- endp->allow_patch = 0;
memset(&endp->taps, 0, sizeof(endp->taps));
}